Nearly 100,000 people flocked to Flushing Meadows yesterday for the finale of the Rev. Billy Graham’s three days of preaching and music – many of them bemoaning that there would probably be no encore.

The 86-year-old Graham, who suffers from Parkinson’s disease and prostate cancer, spent the last day of what he said is his last crusade speaking about the last days of the world as we know it.

“There is going to come an end,” he said, as his white hair waved in the wind. “Not the earth, but the world system. Some will be eternally lost, some will be eternally saved.”

The sunburned born-again crowd showered Graham in cheers on a sweltering afternoon of adieus and amens.

He began the 20-minute sermon by telling the same joke that he told at Madison Square Garden in 1957 – about a Southern Baptist who mistakenly bets on a horse at Belmont blessed by a Catholic priest, not realizing the priest was actually performing the last rites.

Graham then switched to weightier manners.

“There comes a time when it will be too late for you,” he said. “This may be the last chance you ever have. I want you to get out of your seat, and come forward and say, ‘I want Jesus.’ ”

Adding local flavor to the festivities, he was joined by the Brooklyn Tabernacle Choir and representatives of the city’s finest and bravest.

The Big Apple was a perfect place to cap off his 60-year career, Graham said.

The evangelist first attained national promise in 1957 during a 16-week stint at Madison Square Garden.

Despite his age and ailments, Graham has not ruled out a possible crusade in London this fall.